Q: Q: Car won't start after getting gas

asked by on

When getting gas and going to start my car it's not starting up. I have to put pressure on the brake for a few seconds and then my car will start right up. I have to sometimes hurry and put it in drive so it won't go down as well.

My car has 150000 miles.
My car has an automatic transmission.

Hello. If this is occurring right after you get fuel then most of the time it is caused by a vent valve or purge valve that is sticking open. Most of the time it is a purge valve problem. This valve is part of the evaporative emissions system and needs to be closed most of the time, especially when fueling. If it is open it will allow fuel vapor and even at times raw fuel to enter the engine while fueling. This essentially causes a rich condition or floods the engine and that is why it takes time to start it back up. It can also be a failing fuel pump or coincidentally a failing crankshaft position sensor. These are all common, but I always check with the evap system parts first. If you need to have this hard starting problem figured out, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose and repair this.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Q: Car won't start after getting gas

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Q: Truck won't start

If this is the factory light on the dash that says "theft" and is blinking fast, then your theft system is activated. You may need to try another key first after locking all of the doors and waiting a half...

Q: how much would a average tune up b for my Mercedes c280 2000

Hi there. Unfortunately, there is no such thing as a "tune-up" anymore. However, there is scheduled maintenance that has a list provided in the owner's manual or on repair sites such as ALLDATA, MITCHELL, etc..... There should be a list...

Q: Check engine light on & car delays

If all of these trouble codes are related to the throttle body, I would recommend having your vehicle's throttle body inspected by a qualified mechanic who is proficient at engine diagnostics. This inspection would check the throttle body for any...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...